I purchased several different commercial bullets a few years back from Dardas in Michigan. He used a blue lube in all the grooves. The bullets look to be very high quality - among the best I've bought.
These are hard cast bullets. I will be shooting them at .38 Special velocities - nothing really screaming fast.
On a long-forgotten thread from a couple of years ago I read some negative comments about blue lubes. As I recall the comment was aimed at commercial lubes. Possibly someone was using them in the wrong application.
Question: not knowing what I have for blue lube on my bullets, would I be well advised to tumble with my JPW/Xlox/Naptha favorite (about the same as Ben's) just in case the commercial blue lube is not appropriate for what I'm shooting? I don't expect any of my velocities to be much over 900 fps.
Thanks.